Analysts' Upgrades, Downgrades: Google

CHANGE IN RATINGS

Deere (DE Quote) downgraded at Goldman Sachs to Sell from Neutral based on protracted slowdown in agricultural equipment. Believe weakness could linger through 2010 and note 20% lower farmer income in 2009 and weak credit conditions in emerging markets. See potential for DE to reduce 2009 net income guidance by 10% during Feb. 18 earnings announcement. Price target cut to $32 from $38.

DreamWorks Animation (DWA Quote) downgraded at Goldman Sachs to Neutral from Buy based on overly high expectations for "Monsters vs. Aliens" and weakness in DVD market. Note that shares trade at premium to other large-cap entertainment stocks and expect limited multiple expansion. Price target cut to $25 from $35.

Entergy (ETR Quote) upgraded at Credit Suisse from Neutral to Outperform. $92 price target. Company has solid earnings visibility and is at a compelling valuation.

Corning (GLW Quote) upgraded at Argus from Hold to Buy. Valuation call, as the company remains positioned well for the long term in televisions and PC's. $17 price target. ...